/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2017 by Hitachi Vantara : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
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package org.pentaho.di.ui.trans.steps.xmlinputsax;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.pentaho.di.compatibility.Value;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.util.Utils;
import org.pentaho.di.core.Props;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.TransPreviewFactory;
import org.pentaho.di.trans.step.BaseStepMeta;
import org.pentaho.di.trans.step.StepDialogInterface;
import org.pentaho.di.trans.steps.xmlinputsax.XMLInputSaxField;
import org.pentaho.di.trans.steps.xmlinputsax.XMLInputSaxFieldPosition;
import org.pentaho.di.trans.steps.xmlinputsax.XMLInputSaxFieldRetriever;
import org.pentaho.di.trans.steps.xmlinputsax.XMLInputSaxMeta;
import org.pentaho.di.ui.core.dialog.EnterNumberDialog;
import org.pentaho.di.ui.core.dialog.EnterSelectionDialog;
import org.pentaho.di.ui.core.dialog.ErrorDialog;
import org.pentaho.di.ui.core.dialog.PreviewRowsDialog;
import org.pentaho.di.ui.core.widget.ColumnInfo;
import org.pentaho.di.ui.core.widget.TableView;
import org.pentaho.di.ui.core.widget.TextVar;
import org.pentaho.di.ui.trans.dialog.TransPreviewProgressDialog;
import org.pentaho.di.ui.trans.step.BaseStepDialog;

public class XMLInputSaxDialog extends BaseStepDialog implements StepDialogInterface {
  private static Class<?> PKG = XMLInputSaxMeta.class; // for i18n purposes, needed by Translator2!!

  private CTabFolder wTabFolder;

  private FormData fdTabFolder;

  private CTabItem wFileTab, wContentTab, wFieldsTab;

  private Composite wFileComp, wContentComp, wFieldsComp;

  private FormData fdFileComp, fdContentComp, fdFieldsComp;

  private Label wlFilename;

  private Button wbbFilename; // Browse: add file or directory

  private Button wbdFilename; // Delete

  private Button wbeFilename; // Edit

  private Button wbaFilename; // Add or change

  private TextVar wFilename;

  private FormData fdlFilename, fdbFilename, fdbdFilename, fdbeFilename, fdbaFilename, fdFilename;

  private Label wlFilenameList;

  private TableView wFilenameList;

  private FormData fdlFilenameList, fdFilenameList;

  private Label wlFilemask;

  private Text wFilemask;

  private FormData fdlFilemask, fdFilemask;

  private Button wbShowFiles;

  private FormData fdbShowFiles;

  private Label wlInclFilename;

  private Button wInclFilename;

  private FormData fdlInclFilename, fdInclFilename;

  private Label wlInclFilenameField;

  private Text wInclFilenameField;

  private FormData fdlInclFilenameField, fdInclFilenameField;

  private Label wlInclRownum;

  private Button wInclRownum;

  private FormData fdlInclRownum, fdRownum;

  private Label wlInclRownumField;

  private Text wInclRownumField;

  private FormData fdlInclRownumField, fdInclRownumField;

  private Label wlLimit;

  private Text wLimit;

  private FormData fdlLimit, fdLimit;

  private Label wlPosition;

  private TableView wPosition;

  private FormData fdlPosition, fdPosition;

  private TableView wFields;

  private FormData fdFields;

  private TableView wAttributes;

  private FormData fdAttributes;

  private XMLInputSaxMeta input;

  private static final String STRING_PREVIEW_ROWS = BaseMessages.getString(
    PKG, "XMLInputSaxDialog.Button.PreviewRows.Label" );

  public static final int[] dateLengths = new int[] { 23, 19, 14, 10, 10, 10, 10, 8, 8, 8, 8, 6, 6 };

  public XMLInputSaxDialog( Shell parent, Object in, TransMeta transMeta, String sname ) {
    super( parent, (BaseStepMeta) in, transMeta, sname );
    input = (XMLInputSaxMeta) in;
  }

  public String open() {
    Shell parent = getParent();
    Display display = parent.getDisplay();

    shell = new Shell( parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX | SWT.MIN );
    props.setLook( shell );
    setShellImage( shell, input );

    ModifyListener lsMod = new ModifyListener() {
      public void modifyText( ModifyEvent e ) {
        input.setChanged();
      }
    };
    changed = input.hasChanged();

    FormLayout formLayout = new FormLayout();
    formLayout.marginWidth = Const.FORM_MARGIN;
    formLayout.marginHeight = Const.FORM_MARGIN;

    shell.setLayout( formLayout );
    shell.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Shell.Text" ) );

    int middle = props.getMiddlePct();
    int margin = Const.MARGIN;

    // Stepname line
    wlStepname = new Label( shell, SWT.RIGHT );
    wlStepname.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.StepName.Label" ) );
    props.setLook( wlStepname );
    fdlStepname = new FormData();
    fdlStepname.left = new FormAttachment( 0, 0 );
    fdlStepname.top = new FormAttachment( 0, margin );
    fdlStepname.right = new FormAttachment( middle, -margin );
    wlStepname.setLayoutData( fdlStepname );
    wStepname = new Text( shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    wStepname.setText( stepname );
    props.setLook( wStepname );
    wStepname.addModifyListener( lsMod );
    fdStepname = new FormData();
    fdStepname.left = new FormAttachment( middle, 0 );
    fdStepname.top = new FormAttachment( 0, margin );
    fdStepname.right = new FormAttachment( 100, 0 );
    wStepname.setLayoutData( fdStepname );

    wTabFolder = new CTabFolder( shell, SWT.BORDER );
    props.setLook( wTabFolder, Props.WIDGET_STYLE_TAB );

    // ////////////////////////
    // START OF FILE TAB ///
    // ////////////////////////
    wFileTab = new CTabItem( wTabFolder, SWT.NONE );
    wFileTab.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.File.Label" ) );

    wFileComp = new Composite( wTabFolder, SWT.NONE );
    props.setLook( wFileComp );

    FormLayout fileLayout = new FormLayout();
    fileLayout.marginWidth = 3;
    fileLayout.marginHeight = 3;
    wFileComp.setLayout( fileLayout );

    // Filename line
    wlFilename = new Label( wFileComp, SWT.RIGHT );
    wlFilename.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.FileOrDirectory.Label" ) );
    props.setLook( wlFilename );
    fdlFilename = new FormData();
    fdlFilename.left = new FormAttachment( 0, 0 );
    fdlFilename.top = new FormAttachment( 0, 0 );
    fdlFilename.right = new FormAttachment( middle, -margin );
    wlFilename.setLayoutData( fdlFilename );

    wbbFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
    props.setLook( wbbFilename );
    wbbFilename.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.System.Button.Browse" ) );
    wbbFilename.setToolTipText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.Brows.ToolTip" ) );
    fdbFilename = new FormData();
    fdbFilename.right = new FormAttachment( 100, 0 );
    fdbFilename.top = new FormAttachment( 0, 0 );
    wbbFilename.setLayoutData( fdbFilename );

    wbaFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
    props.setLook( wbaFilename );
    wbaFilename.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.AddFile.Label" ) );
    wbaFilename.setToolTipText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.AddFile.ToolTip" ) );
    fdbaFilename = new FormData();
    fdbaFilename.right = new FormAttachment( wbbFilename, -margin );
    fdbaFilename.top = new FormAttachment( 0, 0 );
    wbaFilename.setLayoutData( fdbaFilename );

    wFilename = new TextVar( transMeta, wFileComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wFilename );
    wFilename.addModifyListener( lsMod );
    fdFilename = new FormData();
    fdFilename.left = new FormAttachment( middle, 0 );
    fdFilename.right = new FormAttachment( wbaFilename, -margin );
    fdFilename.top = new FormAttachment( 0, 0 );
    wFilename.setLayoutData( fdFilename );

    wlFilemask = new Label( wFileComp, SWT.RIGHT );
    wlFilemask.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.FileMaskRegExp.Label" ) );
    props.setLook( wlFilemask );
    fdlFilemask = new FormData();
    fdlFilemask.left = new FormAttachment( 0, 0 );
    fdlFilemask.top = new FormAttachment( wFilename, margin );
    fdlFilemask.right = new FormAttachment( middle, -margin );
    wlFilemask.setLayoutData( fdlFilemask );
    wFilemask = new Text( wFileComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wFilemask );
    wFilemask.addModifyListener( lsMod );
    fdFilemask = new FormData();
    fdFilemask.left = new FormAttachment( middle, 0 );
    fdFilemask.top = new FormAttachment( wFilename, margin );
    fdFilemask.right = new FormAttachment( 100, 0 );
    wFilemask.setLayoutData( fdFilemask );

    // Filename list line
    wlFilenameList = new Label( wFileComp, SWT.RIGHT );
    wlFilenameList.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.SelectedFiles.Label" ) );
    props.setLook( wlFilenameList );
    fdlFilenameList = new FormData();
    fdlFilenameList.left = new FormAttachment( 0, 0 );
    fdlFilenameList.top = new FormAttachment( wFilemask, margin );
    fdlFilenameList.right = new FormAttachment( middle, -margin );
    wlFilenameList.setLayoutData( fdlFilenameList );

    // Buttons to the right of the screen...
    wbdFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
    props.setLook( wbdFilename );
    wbdFilename.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.DeleteEntry.Label" ) );
    wbdFilename.setToolTipText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.DeleteEntry.ToolTip" ) );
    fdbdFilename = new FormData();
    fdbdFilename.right = new FormAttachment( 100, 0 );
    fdbdFilename.top = new FormAttachment( wFilemask, 40 );
    wbdFilename.setLayoutData( fdbdFilename );

    wbeFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
    props.setLook( wbeFilename );
    wbeFilename.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.EditEntry.Label" ) );
    wbeFilename.setToolTipText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.EditEntry.ToolTip" ) );
    fdbeFilename = new FormData();
    fdbeFilename.right = new FormAttachment( 100, 0 );
    fdbeFilename.top = new FormAttachment( wbdFilename, margin );
    wbeFilename.setLayoutData( fdbeFilename );

    wbShowFiles = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
    props.setLook( wbShowFiles );
    wbShowFiles.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.ShowFilenames.Label" ) );
    fdbShowFiles = new FormData();
    fdbShowFiles.left = new FormAttachment( middle, 0 );
    fdbShowFiles.bottom = new FormAttachment( 100, 0 );
    wbShowFiles.setLayoutData( fdbShowFiles );

    ColumnInfo[] colinfo = new ColumnInfo[2];
    colinfo[0] =
      new ColumnInfo(
        BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.FileDirectory.Label" ),
        ColumnInfo.COLUMN_TYPE_TEXT, false );
    colinfo[1] =
      new ColumnInfo(
        BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Wildcard.Label" ), ColumnInfo.COLUMN_TYPE_TEXT,
        false );

    colinfo[0].setUsingVariables( true );
    colinfo[1].setToolTip( BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.FileDirectory.ToolTip" ) );

    wFilenameList =
      new TableView(
        transMeta, wFileComp, SWT.FULL_SELECTION | SWT.SINGLE | SWT.BORDER, colinfo, 2, lsMod, props );
    props.setLook( wFilenameList );
    fdFilenameList = new FormData();
    fdFilenameList.left = new FormAttachment( middle, 0 );
    fdFilenameList.right = new FormAttachment( wbdFilename, -margin );
    fdFilenameList.top = new FormAttachment( wFilemask, margin );
    fdFilenameList.bottom = new FormAttachment( wbShowFiles, -margin );
    wFilenameList.setLayoutData( fdFilenameList );

    fdFileComp = new FormData();
    fdFileComp.left = new FormAttachment( 0, 0 );
    fdFileComp.top = new FormAttachment( 0, 0 );
    fdFileComp.right = new FormAttachment( 100, 0 );
    fdFileComp.bottom = new FormAttachment( 100, 0 );
    wFileComp.setLayoutData( fdFileComp );

    wFileComp.layout();
    wFileTab.setControl( wFileComp );

    // ///////////////////////////////////////////////////////////
    // / END OF FILE TAB
    // ///////////////////////////////////////////////////////////

    // ////////////////////////
    // START OF CONTENT TAB///
    // /
    wContentTab = new CTabItem( wTabFolder, SWT.NONE );
    wContentTab.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Tab.Content.Label" ) );

    FormLayout contentLayout = new FormLayout();
    contentLayout.marginWidth = 3;
    contentLayout.marginHeight = 3;

    wContentComp = new Composite( wTabFolder, SWT.NONE );
    props.setLook( wContentComp );
    wContentComp.setLayout( contentLayout );

    wlInclFilename = new Label( wContentComp, SWT.RIGHT );
    wlInclFilename.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.IncludeFilename.Label" ) );
    props.setLook( wlInclFilename );
    fdlInclFilename = new FormData();
    fdlInclFilename.left = new FormAttachment( 0, 0 );
    fdlInclFilename.top = new FormAttachment( 0, 0 );
    fdlInclFilename.right = new FormAttachment( middle, -margin );
    wlInclFilename.setLayoutData( fdlInclFilename );
    wInclFilename = new Button( wContentComp, SWT.CHECK );
    props.setLook( wInclFilename );
    wInclFilename.setToolTipText( BaseMessages.getString( PKG, "XMLInputSaxDialog.IncludeFilename.ToolTip" ) );
    fdInclFilename = new FormData();
    fdInclFilename.left = new FormAttachment( middle, 0 );
    fdInclFilename.top = new FormAttachment( 0, 0 );
    wInclFilename.setLayoutData( fdInclFilename );

    wlInclFilenameField = new Label( wContentComp, SWT.LEFT );
    wlInclFilenameField.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.FilenameFieldname.Label" ) );
    props.setLook( wlInclFilenameField );
    fdlInclFilenameField = new FormData();
    fdlInclFilenameField.left = new FormAttachment( wInclFilename, margin );
    fdlInclFilenameField.top = new FormAttachment( 0, 0 );
    wlInclFilenameField.setLayoutData( fdlInclFilenameField );
    wInclFilenameField = new Text( wContentComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wInclFilenameField );
    wInclFilenameField.addModifyListener( lsMod );
    fdInclFilenameField = new FormData();
    fdInclFilenameField.left = new FormAttachment( wlInclFilenameField, margin );
    fdInclFilenameField.top = new FormAttachment( 0, 0 );
    fdInclFilenameField.right = new FormAttachment( 100, 0 );
    wInclFilenameField.setLayoutData( fdInclFilenameField );

    wlInclRownum = new Label( wContentComp, SWT.RIGHT );
    wlInclRownum.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.RowNumInOutput.Label" ) );
    props.setLook( wlInclRownum );
    fdlInclRownum = new FormData();
    fdlInclRownum.left = new FormAttachment( 0, 0 );
    fdlInclRownum.top = new FormAttachment( wInclFilenameField, margin );
    fdlInclRownum.right = new FormAttachment( middle, -margin );
    wlInclRownum.setLayoutData( fdlInclRownum );
    wInclRownum = new Button( wContentComp, SWT.CHECK );
    props.setLook( wInclRownum );
    wInclRownum.setToolTipText( BaseMessages.getString( PKG, "XMLInputSaxDialog.RowNumInOutput.ToolTip" ) );
    fdRownum = new FormData();
    fdRownum.left = new FormAttachment( middle, 0 );
    fdRownum.top = new FormAttachment( wInclFilenameField, margin );
    wInclRownum.setLayoutData( fdRownum );

    wlInclRownumField = new Label( wContentComp, SWT.RIGHT );
    wlInclRownumField.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.RowNumInOutputField.Label" ) );
    props.setLook( wlInclRownumField );
    fdlInclRownumField = new FormData();
    fdlInclRownumField.left = new FormAttachment( wInclRownum, margin );
    fdlInclRownumField.top = new FormAttachment( wInclFilenameField, margin );
    wlInclRownumField.setLayoutData( fdlInclRownumField );
    wInclRownumField = new Text( wContentComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wInclRownumField );
    wInclRownumField.addModifyListener( lsMod );
    fdInclRownumField = new FormData();
    fdInclRownumField.left = new FormAttachment( wlInclRownumField, margin );
    fdInclRownumField.top = new FormAttachment( wInclFilenameField, margin );
    fdInclRownumField.right = new FormAttachment( 100, 0 );
    wInclRownumField.setLayoutData( fdInclRownumField );

    wlLimit = new Label( wContentComp, SWT.RIGHT );
    wlLimit.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Limit.Label" ) );
    props.setLook( wlLimit );
    fdlLimit = new FormData();
    fdlLimit.left = new FormAttachment( 0, 0 );
    fdlLimit.top = new FormAttachment( wInclRownumField, margin );
    fdlLimit.right = new FormAttachment( middle, -margin );
    wlLimit.setLayoutData( fdlLimit );
    wLimit = new Text( wContentComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wLimit );
    wLimit.addModifyListener( lsMod );
    fdLimit = new FormData();
    fdLimit.left = new FormAttachment( middle, 0 );
    fdLimit.top = new FormAttachment( wInclRownumField, margin );
    fdLimit.right = new FormAttachment( 100, 0 );
    wLimit.setLayoutData( fdLimit );

    String positionHelp = BaseMessages.getString( PKG, "XMLInputSaxDialog.Location.ToolTip" );

    wlPosition = new Label( wContentComp, SWT.RIGHT );
    wlPosition.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Location.Label" ) );
    wlPosition.setToolTipText( positionHelp );
    props.setLook( wlPosition );
    fdlPosition = new FormData();
    fdlPosition.left = new FormAttachment( 0, 0 );
    fdlPosition.top = new FormAttachment( wLimit, margin );
    fdlPosition.right = new FormAttachment( middle, -margin );
    wlPosition.setLayoutData( fdlPosition );

    ColumnInfo[] locationColumns =
      new ColumnInfo[] { new ColumnInfo(
        BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Elements.Label" ), ColumnInfo.COLUMN_TYPE_TEXT,
        false ) };
    locationColumns[0].setToolTip( positionHelp );

    int nrElements = input.getInputPosition() != null ? input.getInputPosition().length : 0;

    wPosition =
      new TableView(
        transMeta, wContentComp, SWT.FULL_SELECTION | SWT.MULTI, locationColumns, nrElements, lsMod, props );
    wPosition.addModifyListener( lsMod );
    fdPosition = new FormData();
    fdPosition.left = new FormAttachment( middle, 0 );
    fdPosition.top = new FormAttachment( wLimit, margin );
    fdPosition.bottom = new FormAttachment( 100, -50 );
    fdPosition.right = new FormAttachment( 100, 0 );
    wPosition.setLayoutData( fdPosition );
    wPosition.setToolTipText( positionHelp );

    fdContentComp = new FormData();
    fdContentComp.left = new FormAttachment( 0, 0 );
    fdContentComp.top = new FormAttachment( 0, 0 );
    fdContentComp.right = new FormAttachment( 100, 0 );
    fdContentComp.bottom = new FormAttachment( 100, 0 );
    wContentComp.setLayoutData( fdContentComp );

    wContentComp.layout();
    wContentTab.setControl( wContentComp );

    // ///////////////////////////////////////////////////////////
    // / END OF CONTENT TAB
    // ///////////////////////////////////////////////////////////

    // Fields tab...
    //
    wFieldsTab = new CTabItem( wTabFolder, SWT.NONE );
    wFieldsTab.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Tab.Fields.Label" ) );

    FormLayout fieldsLayout = new FormLayout();
    fieldsLayout.marginWidth = Const.FORM_MARGIN;
    fieldsLayout.marginHeight = Const.FORM_MARGIN;

    wFieldsComp = new Composite( wTabFolder, SWT.NONE );
    wFieldsComp.setLayout( fieldsLayout );
    props.setLook( wFieldsComp );

    wGet = new Button( wFieldsComp, SWT.PUSH );
    wGet.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Button.GetFields.Label" ) );
    fdGet = new FormData();
    fdGet.left = new FormAttachment( 50, 0 );
    fdGet.bottom = new FormAttachment( 100, 0 );
    wGet.setLayoutData( fdGet );

    final int FieldsRows = input.getInputFields().length;

    // Prepare a list of possible formats...
    String[] dats = Const.getDateFormats();
    String[] nums = Const.getNumberFormats();
    int totsize = dats.length + nums.length;
    String[] formats = new String[totsize];
    for ( int x = 0; x < dats.length; x++ ) {
      formats[x] = dats[x];
    }
    for ( int x = 0; x < nums.length; x++ ) {
      formats[dats.length + x] = nums[x];
    }

    ColumnInfo[] colinf =
      new ColumnInfo[] {
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Name.Label" ), ColumnInfo.COLUMN_TYPE_TEXT,
          false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Type.Label" ),
          ColumnInfo.COLUMN_TYPE_CCOMBO, Value.getTypes(), true ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Format.Label" ),
          ColumnInfo.COLUMN_TYPE_CCOMBO, formats ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Length.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Precision.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Currency.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Decimal.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Group.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.TrimType.Label" ),
          ColumnInfo.COLUMN_TYPE_CCOMBO, XMLInputSaxField.trimTypeDesc, true ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Repeat.Label" ), ColumnInfo.COLUMN_TYPE_CCOMBO,
          new String[] { "Y", "N" }, true ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Position.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ), };

    wFields =
      new TableView( transMeta, wFieldsComp, SWT.FULL_SELECTION | SWT.MULTI, colinf, FieldsRows, lsMod, props );

    final int AttributesRows = input.getDefinitionLength();

    ColumnInfo[] colinfatt =
      new ColumnInfo[] {
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.Element.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "XMLInputSaxDialog.Column.DefiningAttribute.Label" ),
          ColumnInfo.COLUMN_TYPE_TEXT, false ), };

    wAttributes =
      new TableView(
        transMeta, wFieldsComp, SWT.FULL_SELECTION | SWT.MULTI, colinfatt, AttributesRows, lsMod, props );

    fdAttributes = new FormData();
    fdAttributes.left = new FormAttachment( 0, 0 );
    fdAttributes.top = new FormAttachment( 0, 0 );
    fdAttributes.right = new FormAttachment( 100, 0 );
    fdAttributes.bottom = new FormAttachment( 15, 0 );
    wAttributes.setLayoutData( fdAttributes );

    fdFields = new FormData();
    fdFields.left = new FormAttachment( 0, 0 );
    fdFields.top = new FormAttachment( wAttributes, margin * 3 );
    fdFields.right = new FormAttachment( 100, 0 );
    fdFields.bottom = new FormAttachment( wGet, -margin );
    wFields.setLayoutData( fdFields );

    fdFieldsComp = new FormData();
    fdFieldsComp.left = new FormAttachment( 0, 0 );
    fdFieldsComp.top = new FormAttachment( 0, 0 );
    fdFieldsComp.right = new FormAttachment( 100, 0 );
    fdFieldsComp.bottom = new FormAttachment( 110, 0 );
    wFieldsComp.setLayoutData( fdFieldsComp );

    wFieldsComp.layout();
    wFieldsTab.setControl( wFieldsComp );

    fdTabFolder = new FormData();
    fdTabFolder.left = new FormAttachment( 0, 0 );
    fdTabFolder.top = new FormAttachment( wStepname, margin );
    fdTabFolder.right = new FormAttachment( 100, 0 );
    fdTabFolder.bottom = new FormAttachment( 100, -50 );
    wTabFolder.setLayoutData( fdTabFolder );

    wOK = new Button( shell, SWT.PUSH );
    wOK.setText( BaseMessages.getString( PKG, "System.Button.OK" ) );

    wPreview = new Button( shell, SWT.PUSH );
    wPreview.setText( STRING_PREVIEW_ROWS );

    wCancel = new Button( shell, SWT.PUSH );
    wCancel.setText( BaseMessages.getString( PKG, "System.Button.Cancel" ) );

    setButtonPositions( new Button[] { wOK, wPreview, wCancel }, margin, wTabFolder );

    // Add listeners
    lsOK = new Listener() {
      public void handleEvent( Event e ) {
        ok();
      }
    };
    lsGet = new Listener() {
      public void handleEvent( Event e ) {
        get();
      }
    };
    lsPreview = new Listener() {
      public void handleEvent( Event e ) {
        preview();
      }
    };
    lsCancel = new Listener() {
      public void handleEvent( Event e ) {
        cancel();
      }
    };

    wOK.addListener( SWT.Selection, lsOK );
    wGet.addListener( SWT.Selection, lsGet );
    wPreview.addListener( SWT.Selection, lsPreview );
    wCancel.addListener( SWT.Selection, lsCancel );

    lsDef = new SelectionAdapter() {
      public void widgetDefaultSelected( SelectionEvent e ) {
        ok();
      }
    };

    wStepname.addSelectionListener( lsDef );
    wLimit.addSelectionListener( lsDef );
    wInclRownumField.addSelectionListener( lsDef );
    wInclFilenameField.addSelectionListener( lsDef );

    // Add the file to the list of files...
    SelectionAdapter selA = new SelectionAdapter() {
      public void widgetSelected( SelectionEvent arg0 ) {
        wFilenameList.add( new String[] { wFilename.getText(), wFilemask.getText() } );
        wFilename.setText( "" );
        wFilemask.setText( "" );
        wFilenameList.removeEmptyRows();
        wFilenameList.setRowNums();
        wFilenameList.optWidth( true );
      }
    };
    wbaFilename.addSelectionListener( selA );
    wFilename.addSelectionListener( selA );

    // Delete files from the list of files...
    wbdFilename.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent arg0 ) {
        int[] idx = wFilenameList.getSelectionIndices();
        wFilenameList.remove( idx );
        wFilenameList.removeEmptyRows();
        wFilenameList.setRowNums();
      }
    } );

    // Edit the selected file & remove from the list...
    wbeFilename.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent arg0 ) {
        int idx = wFilenameList.getSelectionIndex();
        if ( idx >= 0 ) {
          String[] string = wFilenameList.getItem( idx );
          wFilename.setText( string[0] );
          wFilemask.setText( string[1] );
          wFilenameList.remove( idx );
        }
        wFilenameList.removeEmptyRows();
        wFilenameList.setRowNums();
      }
    } );

    // Show the files that are selected at this time...
    wbShowFiles.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent e ) {
        try {
          XMLInputSaxMeta tfii = new XMLInputSaxMeta();
          getInfo( tfii );
          String[] files = tfii.getFilePaths( transMeta );
          if ( files != null && files.length > 0 ) {
            EnterSelectionDialog esd = new EnterSelectionDialog( shell, files,
              BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.FilesRead.Title" ),
              BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.FilesRead.Message" ) );
            esd.setViewOnly();
            esd.open();
          } else {
            MessageBox mb = new MessageBox( shell, SWT.OK | SWT.ICON_ERROR );
            mb.setMessage( BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.NoFilesFound.Message" ) );
            mb.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.NoFilesFound.Title" ) );
            mb.open();
          }
        } catch ( KettleException ex ) {
          new ErrorDialog( shell,
            BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.ErrorParsingInputData.Title" ),
            BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.ErrorParsingInputData.Message" ), ex );
        }
      }
    } );
    // Enable/disable the right fields to allow a filename to be added to
    // each row...
    wInclFilename.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent e ) {
        setIncludeFilename();
      }
    } );

    // Enable/disable the right fields to allow a row number to be added to
    // each row...
    wInclRownum.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent e ) {
        setIncludeRownum();
      }
    } );

    // Whenever something changes, set the tooltip to the expanded version
    // of the filename:
    wFilename.addModifyListener( new ModifyListener() {
      public void modifyText( ModifyEvent e ) {
        wFilename.setToolTipText( transMeta.environmentSubstitute( wFilename.getText() ) );
      }
    } );

    // Listen to the Browse... button
    wbbFilename.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent e ) {
        if ( wFilemask.getText() != null && wFilemask.getText().length() > 0 ) { // A mask: a directory!

          DirectoryDialog dialog = new DirectoryDialog( shell, SWT.OPEN );
          if ( wFilename.getText() != null ) {
            String fpath = transMeta.environmentSubstitute( wFilename.getText() );
            dialog.setFilterPath( fpath );
          }

          if ( dialog.open() != null ) {
            String str = dialog.getFilterPath();
            wFilename.setText( str );
          }
        } else {
          FileDialog dialog = new FileDialog( shell, SWT.OPEN );
          dialog.setFilterExtensions( new String[] { "*.xml;*.XML", "*" } );
          if ( wFilename.getText() != null ) {
            String fname = transMeta.environmentSubstitute( wFilename.getText() );
            dialog.setFileName( fname );
          }

          dialog.setFilterNames( new String[] {
            BaseMessages.getString( PKG, "XMLInputSaxDialog.60" ),
            BaseMessages.getString( PKG, "XMLInputSaxDialog.68" ) } );

          if ( dialog.open() != null ) {
            String str = dialog.getFilterPath() + System.getProperty( "file.separator" ) + dialog.getFileName();
            wFilename.setText( str );
          }
        }
      }
    } );

    // Detect X or ALT-F4 or something that kills this window...
    shell.addShellListener( new ShellAdapter() {
      public void shellClosed( ShellEvent e ) {
        cancel();
      }
    } );

    wTabFolder.setSelection( 0 );

    // Set the shell size, based upon previous time...
    setSize();
    getData( input );
    input.setChanged( changed );
    wFields.optWidth( true );

    shell.open();
    while ( !shell.isDisposed() ) {
      if ( !display.readAndDispatch() ) {
        display.sleep();
      }
    }
    return stepname;
  }

  public void setMultiple() {
    /*
     * wlFilemask.setEnabled(wMultiple.getSelection()); wFilemask.setEnabled(wMultiple.getSelection());
     * wlFilename.setText(wMultiple.getSelection()?"Directory":"Filename ");
     */
  }

  public void setIncludeFilename() {
    wlInclFilenameField.setEnabled( wInclFilename.getSelection() );
    wInclFilenameField.setEnabled( wInclFilename.getSelection() );
  }

  public void setIncludeRownum() {
    wlInclRownumField.setEnabled( wInclRownum.getSelection() );
    wInclRownumField.setEnabled( wInclRownum.getSelection() );
  }

  /**
   * Read the data from the XMLvInputMeta object and show it in this dialog.
   *
   * @param in
   *          The XMLvInputMeta object to obtain the data from.
   */
  public void getData( XMLInputSaxMeta in ) {
    if ( in.getFileName() != null ) {
      wFilenameList.removeAll();
      for ( int i = 0; i < in.getFileName().length; i++ ) {
        wFilenameList.add( new String[] { in.getFileName()[i], in.getFileMask()[i] } );
      }
      wFilenameList.removeEmptyRows();
      wFilenameList.setRowNums();
      wFilenameList.optWidth( true );
    }
    wInclFilename.setSelection( in.includeFilename() );
    wInclRownum.setSelection( in.includeRowNumber() );
    // wMultiple.setSelection(in.wildcard);
    if ( in.getFilenameField() != null ) {
      wInclFilenameField.setText( in.getFilenameField() );
    }
    if ( in.getRowNumberField() != null ) {
      wInclRownumField.setText( in.getRowNumberField() );
    }
    wLimit.setText( "" + in.getRowLimit() );

    logDebug( "getting fields info..." );
    for ( int i = 0; i < in.getInputFields().length; i++ ) {
      XMLInputSaxField field = in.getInputFields()[i];

      if ( field != null ) {
        TableItem item = wFields.table.getItem( i );
        String name = field.getName();
        String type = field.getTypeDesc();
        String format = field.getFormat();
        String length = "" + field.getLength();
        String prec = "" + field.getPrecision();
        String curr = field.getCurrencySymbol();
        String group = field.getGroupSymbol();
        String decim = field.getDecimalSymbol();
        String trim = field.getTrimTypeDesc();
        String rep = field.isRepeated() ? "Y" : "N";

        if ( name != null ) {
          item.setText( 1, name );
        }
        if ( type != null ) {
          item.setText( 2, type );
        }
        if ( format != null ) {
          item.setText( 3, format );
        }
        if ( length != null && !"-1".equals( length ) ) {
          item.setText( 4, length );
        }
        if ( prec != null && !"-1".equals( prec ) ) {
          item.setText( 5, prec );
        }
        if ( curr != null ) {
          item.setText( 6, curr );
        }
        if ( decim != null ) {
          item.setText( 7, decim );
        }
        if ( group != null ) {
          item.setText( 8, group );
        }
        if ( trim != null ) {
          item.setText( 9, trim );
        }
        if ( rep != null ) {
          item.setText( 10, rep );
        }

        item.setText( 11, field.getFieldPositionsCode() );
      }
    }

    for ( int i = 0; i < input.getDefinitionLength(); i++ ) {
      TableItem item = wAttributes.table.getItem( i );
      item.setText( 1, input.getDefiningElement( i ) );
      item.setText( 2, input.getDefiningAttribute( i ) );
    }

    for ( int i = 0; i < input.getInputPosition().length; i++ ) {
      TableItem item = wPosition.table.getItem( i );
      if ( input.getInputPosition()[i] != null ) {
        item.setText( 1, input.getInputPosition()[i].toString() );
      }
    }

    wFields.removeEmptyRows();
    wFields.setRowNums();
    wFields.optWidth( true );

    wPosition.removeEmptyRows();
    wPosition.setRowNums();
    wPosition.optWidth( true );

    setMultiple();
    setIncludeFilename();
    setIncludeRownum();

    wStepname.selectAll();
    wStepname.setFocus();
  }

  private void cancel() {
    stepname = null;
    input.setChanged( changed );
    dispose();
  }

  private void ok() {
    if ( Utils.isEmpty( wStepname.getText() ) ) {
      return;
    }

    try {
      getInfo( input );
    } catch ( KettleException e ) {
      new ErrorDialog(
        shell, BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.ErrorParsingInputData.Title" ),
        BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.ErrorParsingInputData.Message" ), e );
    }
    dispose();
  }

  // get metadata from ui to in
  private void getInfo( XMLInputSaxMeta in ) throws KettleException {
    stepname = wStepname.getText(); // return value

    // copy info to TextFileInputMeta class (input)
    in.setRowLimit( Const.toLong( wLimit.getText(), 0L ) );
    in.setFilenameField( wInclFilenameField.getText() );
    in.setRowNumberField( wInclRownumField.getText() );

    in.setIncludeFilename( wInclFilename.getSelection() );
    in.setIncludeRowNumber( wInclRownum.getSelection() );

    int nrFiles = wFilenameList.getItemCount();
    int nrAttributes = wAttributes.nrNonEmpty();
    int nrFields = wFields.nrNonEmpty();
    int nrPositions = wPosition.nrNonEmpty();

    in.allocate( nrFiles, nrFields, nrPositions );

    in.setFileName( wFilenameList.getItems( 0 ) );
    in.setFileMask( wFilenameList.getItems( 1 ) );

    in.clearDefinition();
    for ( int i = 0; i < nrAttributes; i++ ) {
      TableItem item = wAttributes.getNonEmpty( i );
      in.setDefiningAttribute( item.getText( 1 ), item.getText( 2 ) );
    }

    for ( int i = 0; i < nrFields; i++ ) {
      XMLInputSaxField field = new XMLInputSaxField();

      TableItem item = wFields.getNonEmpty( i );

      field.setName( item.getText( 1 ) );
      field.setType( Value.getType( item.getText( 2 ) ) );
      field.setFormat( item.getText( 3 ) );
      field.setLength( Const.toInt( item.getText( 4 ), -1 ) );
      field.setPrecision( Const.toInt( item.getText( 5 ), -1 ) );
      field.setCurrencySymbol( item.getText( 6 ) );
      field.setDecimalSymbol( item.getText( 7 ) );
      field.setGroupSymbol( item.getText( 8 ) );
      field.setTrimType( XMLInputSaxField.getTrimType( item.getText( 9 ) ) );
      field.setRepeated( "Y".equalsIgnoreCase( item.getText( 10 ) ) );
      field.setFieldPosition( item.getText( 11 ) );

      //CHECKSTYLE:Indentation:OFF
      in.getInputFields()[i] = field;
    }

    for ( int i = 0; i < nrPositions; i++ ) {
      TableItem item = wPosition.getNonEmpty( i );
      String encode = item.getText( 1 );
      //CHECKSTYLE:Indentation:OFF
      in.getInputPosition()[i] = new XMLInputSaxFieldPosition( encode );
    }
  }

  //
  private void get() {
    try {
      XMLInputSaxMeta meta = new XMLInputSaxMeta();
      getInfo( meta );

      // OK, let's try to walk through the complete tree

      List<XMLInputSaxField> fields = new ArrayList<XMLInputSaxField>();

      // Keep the list of positions

      String[] filePaths = meta.getFilePaths( transMeta );

      if ( meta.getInputPosition().length == 0 ) {
        // error
        MessageBox mb = new MessageBox( shell, SWT.OK | SWT.ICON_ERROR );
        mb.setMessage( BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.NoElements.Message" ) );
        mb.setText( BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.NoElements.Title" ) );
        mb.open();
        return;
      }
      for ( int f = 0; f < filePaths.length; f++ ) {
        XMLInputSaxFieldRetriever fieldRetreiver = new XMLInputSaxFieldRetriever( log, filePaths[f], meta );

        fields = fieldRetreiver.getFields();

        // add the values to the grid...
        for ( int i = 0; i < fields.size(); i++ ) {
          XMLInputSaxField iF = fields.get( i );
          TableItem item = new TableItem( wFields.table, SWT.NONE );
          item.setText( 1, iF.getName() );
          item.setText( 2, iF.getTypeDesc() );
          item.setText( 11, iF.getFieldPositionsCode( meta.getInputPosition().length ) );
        }
        wFields.removeEmptyRows();
        wFields.setRowNums();
        wFields.optWidth( true );
      }
    } catch ( KettleException e ) {
      new ErrorDialog(
        shell, BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.ErrorParsingInputData.Title" ),
        BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.ErrorParsingInputData.Message" ), e );
      System.out.println( e.getMessage() );
    }
  }

  // Preview the data
  private void preview() {
    try {
      // Create the XML input step
      XMLInputSaxMeta oneMeta = new XMLInputSaxMeta();
      getInfo( oneMeta );

      TransMeta previewMeta =
        TransPreviewFactory.generatePreviewTransformation( transMeta, oneMeta, wStepname.getText() );

      EnterNumberDialog numberDialog = new EnterNumberDialog( shell, props.getDefaultPreviewSize(),
        BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.EnterPreviewSize.Title" ),
        BaseMessages.getString( PKG, "XMLInputSaxDialog.Dialog.EnterPreviewSize.Message" ) );
      int previewSize = numberDialog.open();
      if ( previewSize > 0 ) {
        TransPreviewProgressDialog progressDialog =
          new TransPreviewProgressDialog(
            shell, previewMeta, new String[] { wStepname.getText() }, new int[] { previewSize } );
        progressDialog.open();

        if ( !progressDialog.isCancelled() ) {
          PreviewRowsDialog prd = new PreviewRowsDialog( shell, transMeta, SWT.NONE, wStepname.getText(),
            progressDialog.getPreviewRowsMeta( wStepname.getText() ),
            progressDialog.getPreviewRows( wStepname.getText() ) );
          prd.open();
        }
      }
    } catch ( KettleException e ) {
      new ErrorDialog( shell, BaseMessages.getString(
        PKG, "XMLInputSaxDialog.Dialog.ErrorDisplayingPreviewData.Title" ), BaseMessages.getString(
        PKG, "XMLInputSaxDialog.Dialog.ErrorDisplayingPreviewData.Message" ), e );
    }
  }
}
